started higher with news of home prices posting a large gain but have come down with materials and energy companies leading the decline down almost 70 at this hour. >>> many verizon customers noticed the iphone 5 was using up precious cell data even when it was connected to wi-fi. this pushed many other of their monthly limits long before they should have reached the catch. apple has released a software update to fix it now and verizon says it won't charge for any resulting overages. some at&t customers are reporting some similar problems, as well. >>> the first debate between mitt romney and barack obama is one day away. both candidates are behind closed doors getting ready. the outcome of the debates could help decide the election. but both campaigns are downplaying expectation. cbs reporter tara mergener has more from the white house. >> reporter: workers are setting the stage for wednesday night's presidential debate at the university of denver. both candidates are behind closed doors today getting ready. mitt romney is preparing in colorado and the latest polls show he is trailing th